Acacia rendlei is a shrub of the genus Acacia and the subgenus Phyllodineae that is endemic to south western Australia.
The dense, spreading and pungent shrub typically grows to a height of 0.3to with an intricate habit. It has glabrous branchlets with spinose stipules that are in length and widely spreading. Like most species of Acacia it has phyllodes rather than true leaves. The pungent, evergreen and dimidiate phyllodes have a length of and a width of with a midrib that is not prominent.[1] It blooms from October to December and produces yellow flowers. The simple inflorescences occur singly or in pairs in the axils and have spherical flower-heads containing 26 to 32 golden coloured flowers. Following flowering firmly chartaceous seed pods form that have a narrowly oblong shape with a length of up to and awidth of . The elliptic shaped seeds have a length of about and a linear aril that curves around the base of the seed.[1]
It is native to an area in the Wheatbelt and Goldfields-Esperance regions of Western Australia where it is often situated on flats and low hills growing in rocky calcareous loamy or sandy soils. It has a scattered distribution from around the Parker Range in the west to around Kanandah Station in the east where it is often found as a part of open Eucalyptus woodland communities.[1]